Improvement in plows



S. WITHEROW.

Plow.

No. 4,465. Patented Apr. 18, 1846.

UNITED STATES PATENT OEEIcE.

SAMUEL WITHEROW, OF GETTYSBURG, PENNSYLVANIA.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 4,465, dated April 18, 1846.

To all whom it may concern:

Be it known that I, SAMUEL WITHEROW, of Getty sburg, Adams county, Pennsylvania, have invented a new and useful Improvement in Plows; and I do hereby declare that the following is a full and exact description ot' the saine.

The plow is made on the self-sharpening plan, but differs in several respects from those now in use. The most prominent di'erence, however, is in that part of the plow usually denominated the pointj but which, iu the iurther desciiption, I will call the tongue. In the self-sharpening plow now in use the point or tongue is broad and thin, and is fastened to the under side of the incid-board. Mine is deep and narrow, and let into the landside, (which is cast solid with the mold-board,) and fastened to it by a screw-bolt, the nut heilig on the inside of the landside and the head counter-sunk in the tongue. bines strength with ease ot' entering the ground. The tongue may vary in size to suit the plow. The one I will describe, which answers well for a large plow, is fourteen inches long. The thickness, which is uniform throughout the whole length, is one and one-eighth inch. The part G H (see accompanying drawing) which enters the landside is six inches long and one and three-fourths deep. At theend of the landside there are shoulders B C on each side ot' the tongue three-fourths of an inch deep, the one, B, resting against the end of the landside D, the other, C, against the cutter and a projection of the mold-board. From the shoulv ders forward it is tapered equally on each side,

This form eon14 at the point A.

The position in which the tongue is placed is suoli` that the point A and the shoulder B will range with the bottom of the landside E; but the principal improvement consists in an arrangement by which lhc tongue can be raised at the hind end and lowered at the point as it wears 0H. The space in the landside K L, in which the tongue is placed, is made wider behind than it is before, and there are. notches in the hind end oi' the tongue G resembling saw-teeth, and corresponding ones in the land- Having thus fully set forth the nature of the.

improvement and the manner in which it is constructed, what I claim therein as my invention isl The arrangement by which the tongue can be raised behind and lowered at the point, as above described.

SAMUEL vWI'IHEROW.

Witnesses JNO. H. REED, J. B. DANNER.

in the form of acurve, to one-eighth of an inch f side, which tit into each other, so that when the tongue wears ott' at the point the screw fasten' 

